Exam 3 Flashcards
A. Friedman - Purdue University
Dyenin and kinesin interact with
microtubules
Myosin interacts with
microfilaments
Intermediate filaments
no role in movement
Extracellular matrix function
holds cells into tissues, forms basal lamina
Basal lamina function
separates epithelial (layered) cells from the rest of the body
ECM is __ from cells by __
secreted; exocytosis
Term for plasma membrane permeability
selectively permeable
What chemically modifies proteins in the membrane
glycoproteins
Membrane contains what in addition to phospholipids
cholesterol and glycolipids
Mobility of membrane proteins and lipids
Not fixed; will move laterally in the plane of the membrane (fluid mosaic)
Name for part polar and part nonpolar
ampipathic
Area of phospholipid monolayer is __ the area of the starting cells
twice
Which part of the bilayer forms the central barrier between inside and outside cell
Hydrophobic tails
Excluding holes, pores and proteins the membrane is permeable to __ and impermeable to __
nonpolar and small molecules; polar, large, and charged molecules
Integral membrane proteins
span across membrane; tightly bound
3 domains of integral membrane proteins
intracellular, transmembrane, extracellular